{ ... }: {
  nix.settings = {
    auto-optimise-store = true;
    use-xdg-base-directories = true;
    experimental-features = [ "flakes" "nix-command" ];

    substituters = [
      "https://nixbin.sinanmohd.com"
      "https://nix-community.cachix.org"
    ];
    trusted-public-keys = [
      "nixbin.sinanmohd.com:dXV3KDPVrm+cGJ2M1ZmTeQJqFGaEapqiVoWHgYDh03k="
      "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
    ];
  };
}